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TOALL WHOM IT MAY COLNGEIUNT:v I

Be it kown'thnt I, ALFRED HORN, of Silver City, countyof Lyon, State of Nevada, have invented an Improved Grinder and Ainslgnmntor; and I do hereby declare 'the following description Vund accompanying drawings are su-cientto ensble my person skilled in the nrt or science to whichit most nearly appertlsins to make and usemy said invention or improvements vithont furthervinvention or experiment.-

My invention relates to un improved grinding and s inalgameting-pun, for extracting the preeiousmetals, i

and consists in forming annular grooves around the inner periphery of vthe p'nn and the axis of revolution, and

4connecting the two by o channel or channels beneath thedies; slso, to inclineprojections cust upon the ends of the shoes, so as to take up the mercury, in rotating in the grooves orl channels, und distribute it thrmgh-the pulp, and ut the sume time conform to Vthenoturnl wear ot the shoes end fdies Without adjustment, A'

. My invention also relates to the monner of attaching rings to the sides on rim of thepen.

Referring to the drawings, forming a. pui-tof -this specifications- U Figure 1 is .n'sitle sectional elevation'. Figure 2 is a. plan of the bottom of the pon.

.` Figure 3 shows n vieiof the shoe.

Arcprescntsia. pan, eonstructedof'. iron, -unulesred size, having e. conicalcentre, around which' the mullet rotates. Around theinner peripheryof the bot-torn of. the punis mudezin annular channel or groove, B, and a channel, B', around the conical centro, at ite base, which 'muy be made a. little wider than that of B, v

V:Between tiiese tivo grooves the surface of the prin isfe plane, und upon it ure placed the dies G C C C. Beneath' l the dies, in the bottom of the pen, arenlso mode channelsy or grooves D E, which 'connect with the`inner und outer grooves, which ellen'4 the mercury to pass from oneto the other.

Thcmuller-framc E revolves around the conicol centre of the'pan in the usual way, and extends to near the sides of it, loss the nfidthof the outer groove unddip' of the pan.

lTo theoutcn ends of the mullers or shoes .ore cast incline Scrapers F Fothe lower ends of whicht theconcuvity of the nnnulurlgroove, and conform to the' weer of the shoes and dies without adjustment other than that nsuolly employed for raising and lowering the mullers. The inner end` of one or more ot the shoes may be provided {rith my adjustable Scrapers, which were fully described in n patent granted'to nl 'efor an improved nuinlgamutoxg dated November 19, 1867.4 y,

Theoperetio-n oi' my grinder und nmolgamotor is .ns follows: Qniclsilver'is placed in the channels B and B', and the pon filled with pulp, 'when themen-11ers ure set iii motion.v The incline projections at the end of the shoes, following thecircular path of the grooves', take up the `Quicksilver and distribute it through' the pulp,V

causing o. more thorough incorporation with themass than whcre'it is slloived'to remain dormantin the annular channels, while theV openings in the bottomofJho pan permit e. free communication between the two-by Weight` of thc'pu'ip or? grinders, or g'ruvity of the qu'icksilver, asin cose where c. lei-ger bodyaccumulates in the control groove.

' For orresting und breking the rotary current of pulp torvardsthe rim of thepnn, ordinary curved wings, G G G, ure attached by u ber'ellod vertical slot, H, with c corresponding lng, H', telit the opening, thus dovc-tuiling the Wingle the pan, und allowing it to `be easily removed. This opening is cast with the pun,- and the lug cust with `the ring." f"

Having thus described my invention, what I claim, and dosirete secure by Letters Patent, is- 1. In combination withth annular chnmbers B and B', the connecting-groove or grooves D D, substantiallys and for the purpose speciiied.; v

2. 'Bhe inclino projection onscrnpers F 1, cost -ut the end of the shoe, conforming'to the natural weer of the shoes ond dies -withoutndjus'tuxen snhstuntilly as described.

3. 'Attaching the Awings G G hy the bevelled slotsHH and lugs H H', suhstantiuliv as' described. l In witness whereo' I have hereunto set my hund and seul.l

,t ALFRED HORN. [1.. SL]

Witnesses C..W. M. Smm, J. L. Denim` 

